C# Corner

Resources  
  • Read Microsoft Access Database in C#Jan 01, 2000. How to connect and read data from a Microsoft Access (.mdb) database using ADO.NET and C#.
  • CSDownloadURL : Download Contents of a Web PageDec 03, 2000. CSDownloadURL is a class which has two functions - SetURL and DownloadURL. The set URL sets the current URL and GetDownload downloads the URL contents and returns its contents in a string.
  • Database Explorer : Part 2Jan 22, 2001. Attached is a C# program which is a enhanced version of the previous article on ADO.NET.
  • Ping Utility in C#Feb 16, 2001. Ping is a very useful utility used to determine the speed of a Network Connection. It establishes a socket connection with the given hostname and sends a Data Packet using ICMP Protocol.
  • Verbatim String LiteralsMar 01, 2001. I used to wonder, if I could somehow represent "\" as "\" instead of the escape sequence for black slash ("\\") in string.
  • Effective C#: Working with StringsMar 12, 2001. Using string might degrade the performance of your application. This article explains about what precautions you should take when you are going to use strings in your application.
  • Programming in ADO.NETMar 19, 2001. A simple example shows you how to read a database table in a dataset and display in a list view control.
  • Using Delegates to Choose Right FunctionApr 01, 2001. The need to call different class method based on some string passed to class is an old problem.
  • Connect to an Oracle DatabaseMay 03, 2001. This sample code shows you how to connect to an Oracle database using C#.
  • FTP Explorer in C#May 21, 2001. I have developed a GUI based FTP client application. This takes connection information and populates folder and files in treeview and listview respectively.
  • Working with OleDb Data AdaptersJun 20, 2001. This step by step article guides you to create your database applications using OleDb Data Adapters in VS.NET.
  • TCP/IPLib SampleJun 22, 2001. This compopnent contains both a TCP/IP server and client. TcpIpClient inherits from System.Net.Sockets.TCPClient and is very straight forward. After construction, specifying the host and port, a network connection is established by calling Connect(). Internally, upon a successful connection, the client receives a TcpIpPacket, which contains a unique cookie that is used in any subsequent transactions.
  • Time TickerJun 26, 2001. Graphics Class encapsulates a GDI+ drawing surface. The FromHWND method is used to create a new instance of the Graphics class from a window handle. Clear method fills the entire drawing surface with the specified RGB color by using Color class. DrawString method draws a string using Font and SolidBrush classes.
  • strnicmp equivalent in C#Aug 07, 2001. C# equivalent strnicmp function in C language. It accepts two input strings along with the number of positions of chars to compare.
  • Basic Database Operations in ADO.NETAug 08, 2001. This Article will show the basic database transactions select, insert update and delete.
  • CDataService: A Generic Database Access ClassAug 09, 2001. Using a generic database access component in data-aware applications can simply development and separate data tier from business tier.
  • XML GeneratorAug 17, 2001. This article is about advance use of reflection package in Csharp.
  • Super String in C#Aug 20, 2001. Today I realized that I miss those Visual Basic/Visual C++ type operators. You know the ones: Left, Mid, Right.
  • Easter CalculatorAug 22, 2001. This program calculates the dates for Easter for any given year and for an hundred years.
  • WhoIs Sample CodeAug 27, 2001. Sample example shows you how to implement WhoIs...
  • Socket Programming in C#Sep 03, 2001. This program is useful for a starter who wants to write C# code using .Net Sockets.
  • String Jargon in C#Sep 05, 2001. The following article shows some String functions which are not currently available directly in C#.
  • Regular Expressions Usage in C#Sep 07, 2001. The source code shows how to use Regular Expressions in C#.
  • Playing with StringsSep 18, 2001. This program explores the String class and its various methods. With this you will be able to initialize strings using different constructors and use them. To see how the methods of the 'String' class work, see the following code.
  • IComparable: Under the HoodSep 21, 2001. We now calling Array.Sort() on C# Types such as int, char, string will automatically do sorting based on that type.
  • A Simple Multi-threaded TCP/UDP Server and Client V2.Sep 24, 2001. This is the second version of my client/server program. The server and the client can be run on the same machine or on different machines. The following is the brief description of the server and the client programs specifically.
  • Console Based ChatOct 01, 2001. This is a article on how to create a simple console based chat application using socket connections.
  • Real Time ApplicationOct 02, 2001. The Real time Application is a sample that shows the communication techniques between a client (TcpClient) and a server (TcpServer) application using Socket class on each side. The project also demonstrates how to using listview control in the real time project.
  • Mapping Objects to Relational DatabasesNov 01, 2001. The application generates C# Class files for each table in a relational database. I have used Mysql and ODBC.NET for this project. The application only supports MySQL right now.
  • C# IRC BotNov 19, 2001. This is a very simple program that establishes a connection to irc server, joins a channel and greets every nick that joins.
  • C# and .NETJan 07, 2002. It is sometimes important to know the details of what the compiler does. You may want to know whether constants are evaluated at compile time, or whether constant strings are folded at compile time.
  • SharpHSQL - An SQL engine written in C#Jan 08, 2002. .NET! C#! If you haven't been inundated with the marketing of Microsoft's new initiatives, you've been living in your cube without a web connection for quite a while. Like a lot of developers, I had installed the .NET SDK and the Beta 1 of Visual Studio .NET and played with it. However, since its release was so far out in the future and I had deadlines to meet, I soon went back to working with the things my customers needed now.
  • FTP Explorer in C#: Beta 2Jan 10, 2002. FTP Explorer is a MDI application that can explore FTP server. This application takes FTP connection information and populates folder and files in treeview and listview respectively.
  • FTP Explorer in C#(Beta 2)Jan 10, 2002. FTP Explorer is a MDI application that can explore FTP server. This application takes FTP connection information and populates folder and files in treeview and listview respectively.
  • Hangman Program Using C#Jan 19, 2002. Hangman was created to illustrate several features of C# including GDI+, string manipulation, array processing, using properties, as well as simple creation of objects.
  • Working with Strings in VB.NETFeb 05, 2002. This article is VB.NET version of Working with Strings in .NET using C#.
  • Web/WAP Calender form Harrison LogicFeb 11, 2002. This application provides an updateable web-based calendar that can be viewed from both the Web and through a Mobile device, such as a cellular phone.
  • A Database Web ServiceFeb 22, 2002. This program is a Web service, which contains Web methods that return a dataset after querying a database (any database) given the connection string, the password, the database, the table, the user ID and the SQL commands.
  • Sorting Object Using IComparer and IComparable Interfaces Mar 01, 2002. The System.Collections namespace contains interfaces and classes that define various...
  • Authenticate Web ServiceMar 04, 2002. In this example we will build a web service that authenticates userid and password from an a very simple MS Access database. This web service exposes only one method to the client.
  • Boxing and Performance of CollectionsMar 14, 2002. In this article, I will compare some performance issues of values and references types during boxing and unboxing operations.
  • Printing Invoices using C# and .NETMar 18, 2002. This program can stand improvements but it will get you started in creating an invoice and printing it to the printer.
  • SQL Server Database ExplorerMar 20, 2002. This application connects to a running SQL Server 2000 and displays all the available databases in it.
  • Peer-to-peer Chat Program using Asynchronous SocketMar 22, 2002. This is a simple chat program, which uses asynchronous socket to provide connection between two machines.
  • Poorman's Installation program in C# and .NETApr 08, 2002. Installation programs can be quite expensive these days. Although programs such as Wise and InstallShield have fantastic features and are fairly comprehensive, sometimes you just want to do the easy installation of copying and pasting files into a directory and perhaps placing a shortcut in the start menu.
  • Gene Expression Programming (GEP) in C# and .NETApr 11, 2002. Gene Expression programming (GEP) is a subset of Genetic Algorithms, except it uses genomes whose strings of numbers represent symbols. The string of symbols can further represent equations, grammars, or logical mappings.
  • Communication Between Two Forms: Part-IIJun 24, 2002. Last time I wrote about the possibility of sending a string from a textbox in one form to another.
  • Sharp HSQL- An SQL Engine Written in C#Aug 01, 2002. .NET! C#! If you haven't been inundated with the marketing of Microsoft's new initiatives, you've been living in your cube without a web connection for quite a while.
  • StringBuilder and String ConcatenationOct 01, 2002. String concatenation is one of the commonly used operations among programmers.
  • How to Fill Your Own Dynamic Objects using ADO.NETOct 02, 2002. Sometimes you need to use information of different types like strings, booleans or doubles in the same data structure.
  • Database Vendor Independent Code with Improved Connection PoolingOct 17, 2002. This article covers how to create a database application that allows you to specify different databases without writing code for different data providers.
  • More AI...(GEP) Gene Expression Programming in C# and .NETNov 04, 2002. Gene Expression programming (GEP) is a subset of Genetic Algorithms, except it uses genomes whose strings of numbers represent symbols.
  • Data Access with ADO.NETNov 04, 2002. This first article will provide a brief history of data access as well as provide the basic flow for using ADO to access data.
  • Accessing Text Files using ODBC Data ProviderNov 12, 2002. In this article, I will show you how to access Access database files using ODBC data provider.
  • C# Versions of Java's StringTokernizerJan 13, 2003. Here is another C# version of the Java StringTokenizer Class from the version posted August last year on your site. Given a string and a set of delimiters, the class return an enumeration of substrings based on the delimeters passed in.
  • Strings in C# Part 2Feb 05, 2003. This article discusses how to format, trim and pad strings using the String class. The article also covers the StringBuilder to effectively deal with string such as string concatenation,
  • String in C#Feb 05, 2003. In this article, you will learn how to work with strings in C#. The article discusses the String class, its methods and properties and how to use them.
  • Run Time CompilerFeb 07, 2003. In this article, I am going to discuss how to take a string then compile it and then how you execute it.
  • SQL Demo Login in C#Feb 23, 2003. This sample code contains a reusable control that allows you to build a dialog box that queries for SQL-Server connection parameters.
  • J2EE to .NET Migration: Quick TipsMar 26, 2003. Here are some Quick tips to get you started, in case you need to migrate a J2EE based application to a .NET based application.
  • Histogram Code in C#Apr 01, 2003. C# histogram class maintains a histogram of input data. Input data is sorted into bins and a count is kept of how many data points fall into each bin.
  • Using Generic Algorithms to Layout Circuit BoardsApr 07, 2003. This article tells you how to use a Genetic Algorithm to optimally layout parts on a circuit board so they have the shortest connections between them.
  • How to Detect a Dialup Connection?May 15, 2003. In the article we'll see how to check connectivity with internet using VB.NET.
  • Java Like StringTokenizer in C# Jun 11, 2003. The StringTokenizer class is yet another implementation of a java-like StringTokenizer in C#.
  • FTP Client ComponentJun 12, 2003. An FTP Connection component that you can add to the toolbox of your IDE.
  • HTTP Handlers for Images in ASP.NETJun 23, 2003. Have you ever thought of streaming thumbnails just by passing query string indicating width or height of thumbnail you need, and most importantly passing those to image itself?
  • Data Access Component for SQL Server in C#Jul 07, 2003. The attached source code a data access component for SQL Server that contains methods to get a DataSet.
  • Check Internet ConnectionAug 25, 2003. How to check if your computer is connected to the internet with C#. It's much more easier that other tutorials I've seen in other sites.
  • State Management in Web FormsFeb 18, 2004. This white paper discusses the ways in which the state management can be handled in web forms. State management can be done either on client side or server side as explained below.
  • Oracle Data Provider for .NET : Part IIFeb 20, 2004. Oracle Data Provider for .NET (ODP.NET) is an implementation of a data provider for the Oracle database. ODP.NET uses Oracle native APIs to offer fast and reliable access to Oracle data and features from any .NET application.
  • Formula Generator - A Regular Expression Generator Class in C# and .NETAug 17, 2004. The attached source code is a class - FormulaGenerator, which is a component that interprets and evaluate a string expression
  • Remote Data Access LayerAug 24, 2004. The attached source project is a data access layer library and the main idea of developing such a DAL is to separate the database execution from the client/end user and maintain it on the server side, there by reducing the number of direct simultaneous connection to the SQL Server.
  • Microsoft Application Center TestOct 13, 2004. Application Center Test (ACT) stress tests Web servers and analyze performance and scalability problems of Web applications. ACT simulates a large group of users by opening multiple connections to the server and rapidly sending HTTP requests. It also supports several other authentication schemes and the SSL protocol, making it ideal for testing personalized and secure sites.
  • Storing Images into a DatabaseOct 18, 2004. In order to provide your application with cool pictures you can employ two techniques (at least). One of them is that you can save the pictures in a folder and store the path to each one in a database or configuration file. The other one is to store the entire file into a database, along with its file name.
  • Generating Random Number and String in C#Nov 19, 2004. The Random class defined in the .NET Framework class library provides functionality to generate random numbers. This article shows you how you can use this class to generate random numbers and strings and even combination of both.
  • Using ListBox in C#Dec 28, 2004. The source code demonstrates how to use a listbox control in C# - adding, deleting and altering strings.
  • Edit Almost Anything with AgileStudioMar 15, 2005. There are a range of controls available as standard for Windows Forms in VisualStudio .NET 2003. These include TextBox to edit strings, CheckBox to edit booleans and even a DateTimePicker. However there is a vast range of types available in .NET.
  • Convert a Comma Delimited String to an Array in C#Aug 01, 2005. This article shows how to convert an array to a comma delimited string in C#.
  • Building WebParts in ASP .Net 2.0Aug 08, 2005. Web Parts is a framework built into ASP.NET 2.0 for building highly customizable portal-style pages. End users can customize Web Parts pages by changing the page layout, adding and removing Web Parts, editing Web Parts properties, establishing connections between Web Parts, and more. I would like to share how to build web parts in ASP .Net 2.0. I am providing the source code of application as well.
  • How do I Convert a String to an Enum Value?Sep 10, 2005. In this How do I, you will learn how to convert a string to an enum value in C#.
  • Convert an Enum to a StringOct 24, 2005. This article shows how to convert an enum value to a string value.
  • Generic 'T, K' Database ComponentDec 17, 2005. I have written a C# 2.0 (Visual Studio 2005), Generic <T, K> Database component, The component has simplified the architecture and the implementation by allowing me to keep the number of overloaded methods to a minimum.
  • Revised Generic 'T, K' Database ComponentDec 20, 2005. This is the code behind the Generic 'T, K' Database Component.
  • Authorization and Programmatic ImpersonationFeb 03, 2006. By default, ASP.NET applications usually do not impersonate the original caller for design, implementation, and scalability reasons. For example, impersonating prevents effective middle-tier connection pooling, which can have a severe impact on application scalability.
  • Server.Transfer : Passing Values from One Page to Another PageJun 19, 2006. Some times, we want to pass values from one page to another page. There are many ways by which we can do this like: by using query string, or session variable, or Server.Transer etc. This article shows you, how to pass values from one page to another page by using Server.Transfer method.
  • Regular ExpressionsJul 05, 2006. The purpose of this article is to build upon the existing pool of regular expression articles by providing an overview of the new regular expression features found in .NET and to offer some guidelines as to when and how to use them.
  • ASP.NET Security With SQL Server 2005Jul 11, 2006. This article focuses on security concerm when using SQL Server 2005 in ASP.NET application.
  • Serializing and Deserializing XML StringJul 20, 2006. In this article we will see how we can serialize a xml sring into an object and vice versa. You can serialize your object to a byte array and can deSerialize the byte array into an object.
  • Understanding Connection PoolingJul 27, 2006. This article is to go in deep in dome key features in the ADO.NET 2 which was shipped with VS 2005. In this article I will go trough one of the key features which is the Connection Pooling.
  • Accessing Data using Object Data Source in ASP.Net 2.0 and C# Aug 23, 2006. This tutorial demonstrates how to bind data against Objects using Visual Studio 2005.
  • Encrypting Connection Strings in ASP.Net 2.0Oct 05, 2006. This article describes how to encrypt the connection strings section in ASP.Net 2.0 web.config files and demonstrates the transperancy of using encrypted connection strings in your web application.
  • Creating SQL Server Database Dynamically in .NET Using SQL DMOOct 05, 2006. It is a sample ASP.NET and Visual Studio 2005 application for creating a SQL Server database at runtime. I have used SQL-DMO dll. This article will show you how to create a database in SQL Server 2005 and 2000.
  • How to Convert String to Hexadecimal and Vice versaOct 31, 2006. This article shows you how to convert string to hexadecimal and vice versa. I did this program for my smart Card application.
  • Working with HashTable in C# 2.0Nov 13, 2006. We often need to store more than one dimension data in a list and data may not be an integer or string. This article shows how to use the HashTable class to store object type data.
  • ASP.Net State Management TechniquesJan 02, 2007. This article gives brief introduction to various state management techniques in ASP.NET.
  • Database connection object with application-wide scopeJan 02, 2007. This article describes a class that can be placed in a Visual Studio C# project that makes a connection object available to any of the other classes in the project.
  • Monitor Internet Connection StateFeb 09, 2007. This article describes an easy approach to building two controls used to monitor the status of an internet connection and provide the user with some indication of that status.
  • Add a Quick Map to a Windows ApplicationMar 15, 2007. This project demonstrates a quick and easy way to add mapping to a windows desktop application (with an available internet connection) using Google Maps as the basis and source for the map.
  • Hiding the Date in a Date Time Picker ControlMar 26, 2007. This very short article will address an extremely easy way to hide the date value contained in a date time picker control. While the control contains no property that will allow you to hide the current date, nor to set the value of the control to null or an empty string, it is still possible, and even very easy to generate a date time picker control that does not display a date.
  • Regular Expression Usage in .Net EnvironmentApr 19, 2007. This article describes how to use regular expression in .Net.

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